program multiplu;
var f:text;
		r,n,ind,ult,a,b,m:int64;
    c,v:array [1..20000] of integer;
		ok:array [1..20000] of boolean;
    gata:boolean;

function cmmdc(x,y:longint):longint;
begin
repeat
	if x>y then
  	x:=x-y
  else
  	y:=y-x
until x=y;
cmmdc:=x
end;

function numar(o,i:longint):longint;
var j,nr:longint;
begin
if c[i]=1 then
	begin
	nr:=1;
	for  j:=1 to o do	
		nr:=nr*10;
	end
else
	nr:=0;
if v[i]>0 then
	numar:=nr+numar(o+1,v[i])
else
	numar:=nr
end;

begin
assign(f,'multiplu.in'); reset(f);
readln(f,a,b);
close(f);
m:=cmmdc(a,b);
m:=a*b div m;
v[1]:=0;
c[1]:=1;
r:=0;
ind:=1;
ult:=1;
gata:=false;
repeat
	n:=numar(1,ind);
  if n mod m=0 then
  	begin
  	gata:=true;
    r:=n
    end
  else
  	if not ok[n mod m] then
    	begin
      ult:=ult+1;
    	ok[n mod m]:=true;
      c[ult]:=0;
      v[ult]:=ind;
      end;
  n:=n+1;
  if n mod m=0 then
  	begin
  	gata:=true;
    r:=n
    end
  else
  	if not ok[n mod m] then
    	begin
      ult:=ult+1;
    	ok[n mod m]:=true;
      c[ult]:=1;
      v[ult]:=ind;
      end;
  ind:=ind+1;	
until gata;
assign(f,'multiplu.out'); rewrite(f);
writeln(f,r);
close(f);
end.